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Old 10-07-2013, 02:13 PM
wa2ise's Avatar
wa2ise wa2ise is offline
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Join Date: Dec 2002
Location: USA
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Quote:
Originally Posted by StellarTV View Post
I'm kinda digging that DeWald High Hefinition set. Maybe it's about time for me to make the HD transition...
In theory, it should be possible to modify the horizontal deflection circuits to run at higher scan rates. 480p (31KHz) should be doable, though going for 720p (43KHz) may be harder. If I could make 480p happen, it's an easy hop to 1080i (32KHz). Oh, the flyback times would stay about the same as for NTSC deflection rates, but that is almost a feature to make the picture be 4:3 as the sides of the picture would get clipped off, aka overscanned. The faster deflection rate probably demands more power than NTSC rates to make the picture the same width. The vertical would not need to be modified. The video amp stage may need more bandwidth, and remove the 4.5MHz sound trap and takeoff.

You would feed it with baseband HD luma directly, not thru the tuner and IF strip.

Anyone up for HD B&W?
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